Institute of Multidisciplinary Research for Advanced Materials, Tohoku University


LAST UPDATE 2021/05/08

  • 研究者氏名
    Researcher Name

    モット・デリック・マイケル Derrick M. MOTT
    助教 Project Assistant Professor
  • 所属
    Professional Affiliation

    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

    マテリアル・計測ハイブリッド研究センター         ナノ・マイクロ計測化学研究分野
    Materials-Measurement Hybrid Research Center, Nano/Micro Chemical Measurements
  • 研究キーワード
    Research Keywords

    Surface Tension
    Atmospheric Science
Research Subject
Chemistry in nano/micro space: measurements & applications

研究の背景 Background


The characterization of atmospheric aerosols is necessary to better the understanding of cloud formation mechanisms and the resulting impact on the environmental climate and weather. By utilizing newly developed optical tweezers (laser-based trapping) to capture aerosol droplets, we can study the effect of droplet size and composition on the surface tension, which has previously been challenging to measure.

研究の目標 Outcome


Capillary waves at a liquid interface form through thermal fluctuation, which can be observed with the quasi-elastic laser scattering (QELS) technique. The spontaneous resonance of thermally induced capillary waves has been demonstrated on liquid surfaces confined within a microchannel and by a circular aperture. I would extend this method’s advantages to estimate various organic compound’s influence on the aerosol properties.

研究図Research Figure

Fig.1. Aerosols in the atmosphere drive weather formation.Fig.2. Laser based optical tweezer combined with QELS is a powerful tool for analyzing capillary surface waves of aerosol droplets.Fig.3. Surface resonant modes in organic molecule containing aerosol reveals the surface tension.

文献 / Publications

K. Gupta, M. Singh, P. Mohan, D. Mott, S. Maenosono, “Synthesis and Characterization of Copper Sulfide-Manganese Sulfide Nanoparticles with Chestnut Morphology and Study on the Semiconducting Properties”, Chemistry Select, 2019, 4, 3898-3904. DOI: 10.1002/slct.201803920